I'm no electrical engineer, nor any sort of a wizard. Merely an enthusiast that takes most of my cues from all of you. That was the response I received from Nelson. Which alludes there probably isn't a problem if you don't connect it. At this point if I don't have to get my fat fingers in there to add it... it would be a blessing.
Color me confused. So are we to interpret the last several posts as to leave the tabs unconnected?
Also, are we supposed to make the filter PCB corner with the thermistor the “chassis safety earth,” as in file the surface of the bottom plate and make an earth connection there? Or is that not needed with the external single voltage SMPS?
I’m more than happy to keep it simple.
Also, are we supposed to make the filter PCB corner with the thermistor the “chassis safety earth,” as in file the surface of the bottom plate and make an earth connection there? Or is that not needed with the external single voltage SMPS?
I’m more than happy to keep it simple.
Attachments
Last edited:
@dudeisms - I'm absolutely, definitely, most-assuredly no expert.
My WAG is that it won't manifest itself it a blowy-uppy-your-ampy kinda way if the wiring is added either. I just think it's curious.
Also, since I happened to have 3 out of 4 prototype boards ... and I'm a bit of a novice ... and since there wasn't much out there yet, I took the plunge with my build and did a zillion DMM readings against the schematics to make sure I didn't do a blow-up-my-amp kind a thing.
Edited to fix crossed wires in responses.
My WAG is that it won't manifest itself it a blowy-uppy-your-ampy kinda way if the wiring is added either. I just think it's curious.
Also, since I happened to have 3 out of 4 prototype boards ... and I'm a bit of a novice ... and since there wasn't much out there yet, I took the plunge with my build and did a zillion DMM readings against the schematics to make sure I didn't do a blow-up-my-amp kind a thing.
Edited to fix crossed wires in responses.
Last edited:
In case anyone is interested, I found some quasi inexpensive aluminum feet that actually grip instead of the felt bottomed stock ones. It visually looks similar and is within 2mm O.D. Of the stock feet.
https://www.amazon.com/dp/B07QL285T...abc_8CXGEJFZQT3EF4XF2TMC?_encoding=UTF8&psc=1
I found some quasi inexpensive aluminum feet that actually grip..
You can get all rubber XXL version Silicone Cutting Board Rubber Bumper Feet - All Sizes and Colors | eBay
Attachments
As usual, my apologies for the confusion. If you wire the chassis to the shell of the
connector, it's redundant, as the shell connects to V- and also earth ground. The
Thermistor and lug/wire are there for the situation where the V- on the supply is
isolated.
just leave them Bstrdz wiggling in da breeze
now serious - redundancy is redundancy of redundancy
which means - Pa made some mess (in Revisions) to keep us Greedy Boyz triple secured
Gird your Grids!
Here come the N's.
Beautiful!
View attachment 944765
In case anyone is interested, I found some quasi inexpensive aluminum feet that actually grip instead of the felt bottomed stock ones. It visually looks similar and is within 2mm O.D. Of the stock feet.
https://www.amazon.com/dp/B07QL285T...abc_8CXGEJFZQT3EF4XF2TMC?_encoding=UTF8&psc=1
I'm gonna have to get some of those "Sand Blasting Amplifier Pads Feet.(Silver)" Thanks for the tip
just leave them Bstrdz wiggling in da breeze
now serious - redundancy is redundancy of redundancy
which means - Pa made some mess (in Revisions) to keep us Greedy Boyz triple secured
That’s true - I’ll never again fire up an amp for the first time without a lid on...
View attachment 944765
In case anyone is interested, I found some quasi inexpensive aluminum feet that actually grip instead of the felt bottomed stock ones. It visually looks similar and is within 2mm O.D. Of the stock feet.
https://www.amazon.com/dp/B07QL285T...abc_8CXGEJFZQT3EF4XF2TMC?_encoding=UTF8&psc=1
Nice feet.....I ordered a set. They match better the quality of rest of the amp.
I just fired the amp up, no F,S,S, and I was able to adjust both channels to 20 vdc.
How long should it sit and idle before retesting the voltage?
Inputs shorted, I didn't read anywhere that was necessary.
Mine stayed pretty stable from the initial adjustment. After an hour or so I rechecked.
- Home
- Amplifiers
- Pass Labs
- DIY Sony VFET Builders thread